Mason Plumbing INC, C-36 Plumbing Contractor in San Anselmo, CA
Mason Plumbing INC operating as a corporation holds an active California contractor license (CSLB #817803), valid through Apr 30, 2027. First issued in 2003, the license has been on the CSLB roster for 23 years. It carries a single CSLB classification: C-36 — Plumbing Contractor. Records show an active surety bond on file with American Contractors Indemnity Company and active workers' compensation coverage from Technology Insurance Company INC. The business is based in San Anselmo, in Marin County, California.
- License Number
- 817803
- Issued
- Mar 5, 2003
- Status
- CLEAR
- Expires
- Apr 30, 2027
- Entity
- Corporation
- Surety
- American Contractors Indemnity Company
- Bond Number
- 100826093
- Effective
- Jan 9, 2024
- Status
- Active
- Coverage
- Workers' Compensation Insurance
- Carrier
- Technology Insurance Company INC
- Policy Number
- TES4681932
- Effective
- Oct 28, 2025
- Expires
- Oct 28, 2026
This contractor is verified, with no adverse conditions in the current CSLB record.
An automated summary of public CSLB data, not a credit score, rating, or endorsement. How we determine this
Is Mason Plumbing INC licensed in California?
Yes. Mason Plumbing INC holds California Contractors State License Board license number 817803, which is active and in good standing. The license was first issued on March 5, 2003. It is valid through April 30, 2027.
What does Mason Plumbing INC specialize in?
Mason Plumbing INC is licensed for one CSLB classification: C-36 Plumbing Contractor.
Where is Mason Plumbing INC headquartered?
Mason Plumbing INC is headquartered at P O Box 2874, San Anselmo, CA 94979, in Marin County, California.
Does Mason Plumbing INC have an active surety bond on file with CSLB?
Yes. Mason Plumbing INC has an active California contractor surety bond filed with American Contractors Indemnity Company.
Does Mason Plumbing INC carry workers' compensation coverage?
Yes. Mason Plumbing INC carries active workers' compensation coverage through Technology Insurance Company INC.
How do I verify Mason Plumbing INC's contractor license?
You can verify Mason Plumbing INC's license directly with the California Contractors State License Board at https://www.cslb.ca.gov/OnlineServices/CheckLicenseII/LicenseDetail.aspx?LicNum=817803.
- License issuedMar 5, 2003
- Bond activeJan 9, 2024
- WC coverage startsOct 28, 2025
- WC expiresOct 28, 2026
- License expiresApr 30, 2027
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